From 512b52a2b234fd2248b4ab86173a08a59c9ae175 Mon Sep 17 00:00:00 2001
From: Yi Hu <yathu@google.com>
Date: Wed, 21 Aug 2024 17:06:53 -0400
Subject: [PATCH] Better error when Python xlang download jar not available
 (#32269)

* Better error when Python xlang download jar not available

* address comment
---
 sdks/python/apache_beam/utils/subprocess_server.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sdks/python/apache_beam/utils/subprocess_server.py b/sdks/python/apache_beam/utils/subprocess_server.py
index b8668c2b61b0c..944c12625d7ce 100644
--- a/sdks/python/apache_beam/utils/subprocess_server.py
+++ b/sdks/python/apache_beam/utils/subprocess_server.py
@@ -385,7 +385,8 @@ def local_jar(cls, url, cache_dir=None):
           os.rename(cached_jar + '.tmp', cached_jar)
         except URLError as e:
           raise RuntimeError(
-              'Unable to fetch remote job server jar at %s: %s' % (url, e))
+              f'Unable to fetch remote job server jar at {url}: {e}. If no '
+              f'Internet access at runtime, stage the jar at {cached_jar}')
       return cached_jar
 
   @classmethod